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Coupled partition of unity method and improved meshless weighted least-square method for two-dimensional interior structure-acoustic problem

机译：二维内部结构声学问题的统一方法和改进的无网格加权最小二乘法的耦合分区

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摘要

Conventional element based methods for modeling acoustic problems are limited to low-frequency applications due to the huge computational efforts. For high-frequency applications, probabilistic techniques, such as statistical energy analysis (SEA), are used. For medium-frequency range, currently no adequate and mature simulation methods exist. This paper discusses a two-dimensional (2D) coupled structure-acoustic problem by coupling the partition of unity method (PUM), for the solid domain, and, an improved meshless weighted least-square (IMWLS) method, for the fluid domain, which demonstrated that the coupled PUM-IMWLS method seems to be an excellent way to reach the medium-frequency accurately.
机译：由于巨大的计算量，用于建模声学问题的基于常规元素的方法仅限于低频应用。对于高频应用，使用概率技术，例如统计能量分析（SEA）。对于中频范围，目前没有足够成熟的仿真方法。本文针对固体域，通过耦合统一方法（PUM）的分区讨论了二维（2D）结构-声学耦合问题，对于流体域，则针对改进的无网格加权最小二乘（IMWLS）方法进行了讨论，这表明耦合的PUM-IMWLS方法似乎是准确达到中频的一种极好的方法。

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  • 来源
    《Engineering analysis with boundary elements》 |2012年第2期|p.154-160|共7页
  • 作者

    Zhijiang Li; Peng Li; Zeng He; Guixiang Liu;

  • 作者单位

    Department of Mechanics, Huazhong University of Science and Technology, Wuhan 430074, China,Hubei Key Laboratory for Engineering Structural Analysis and Safety Assessment, Wuhan 430074, China;

    Department of Mechanics, Huazhong University of Science and Technology, Wuhan 430074, China,Hubei Key Laboratory for Engineering Structural Analysis and Safety Assessment, Wuhan 430074, China;

    Department of Mechanics, Huazhong University of Science and Technology, Wuhan 430074, China,Hubei Key Laboratory for Engineering Structural Analysis and Safety Assessment, Wuhan 430074, China;

    Department of Mechanics, Huazhong University of Science and Technology, Wuhan 430074, China,Hubei Key Laboratory for Engineering Structural Analysis and Safety Assessment, Wuhan 430074, China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    structure-acoustic; partition of unity method; meshless methods; medium frequency;

    机译：结构声统一法划分无网格方法;中频;

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